Ocean boarding vessels (OBVs) were merchant ships taken over by the Royal Navy for the purpose of enforcing wartime blockades by intercepting and boarding foreign vessels.
Former German ship Hannover captured 7/8 March 1940 and put into British service. Commissioned as Ocean boarding vessel in November 1940 but sent for conversion to escort aircraft carrier in January 1941.
The cross channel steamer was requisitioned by the Admiralty as a Barrage Balloon Vessel, converted to Ocean Boarding Vessel in 1943. She was sunk off Normandy by a Neger manned torpedo 18 August 1944.[5]
Former SS Hilary; restored as a merchantman 15 April 1942; recommissioned as an infantry landing and headquarters ship 1943; returned to civilian service after the war in 1945; scrapped 1959.
Bombed and sunk on 7 September 1940. Salvaged and converted to cargo ship Empire Explorer, never saw service as an ocean boarding vessel. Torpedoed and sunk in July 1942.
Bombed and sunk on 7 September 1940. Salvaged and converted to cargo ship Empire Chivalry, never saw service as an ocean boarding vessel. Sold postwar and renamed Planter. Scrapped 1958.
French ship MV Charles Plumier in 1938; seized by Royal Navy; returned to France 1945; sold to a Greek company and renamed MV Pleias 1964; scrapped 1968
^Stephenson-Knight, Marilyn (2006-10). "World War II - Page, C. P.". THE DOVER WAR MEMORIAL PROJECT. Retrieved 30 Jan 2010.Check date values in: |date= (help)
^Helgason, Guðmundur (1995–2010). "Registan". uboat.net. Retrieved 30 Jan 2010.